The jaw crusher has been a staple of the hardrock mining industry since its invention. the oversized discharge returned to the hammer mill for additional grinding. Small portable jaw crusher, gasoline or diesel powered, for quartzgold ore.

Gold miners excavate an eroded bluff with jets of water at a placer mine in Dutch Flat, California sometime between 1857 and 1870. Gold extraction refers to the processes required to extract gold from its ores. This may require a combination of comminution, mineral processing, . In this case, concentration of the sulfides results in concentration of gold

Citigold Corporation has access to a modern gold extraction plant that is located with crushing and grinding circuits, small gravity circuit for coarse gold, gold by conveyer to the grinding mill where water and lime are added prior to the ore

“A New Age Gold Plant Flowsheet for the Treatment of High Grade Ores” Cyanide Tailings. Disposal. Gold. Smelt. Gravity. Concentration. Page 2 grind power requirement in the milling circuit is only approximately one third of what is

“A New Age Gold Plant Flowsheet for the Treatment of High Grade Ores” Cyanide Tailings. Disposal. Gold. Smelt. Gravity. Concentration. Page 2 grind power requirement in the milling circuit is only approximately one third of what is

The stamp "feet" land on the ore and crush it. Any book on mining or gold rush history will have information on stamp mills. Most used some sort of grinder that could be assembled at the site and powered by water or even by animals.